How to remove a char in string using vb.net?

Question

string Example 1 : abc / 
string Example 2 : abc / cdf / / 
string Example 3 : abc / / / /
string Example 4 : / / / / / 
string Example 5 : abc / / xyz / / /

I need to remove the slashes in string with many scenarios. I guess the scenarios is self explanatory in the expected result below.

Result:

    string Example 1 : abc 
    string Example 2 : abc / cdf 
    string Example 3 : abc  
    string Example 4 :  
    string Example 5 : abc / xyz

How do I do this usng vb.net?

Guessing that you want to remove slashes except when they separate other characters. If the solidus is a separator then leave only one, i.e. "a / b / / c" -> "a / b / c". Did you write any code yet? — HABO
– HABO, Commented Jun 18, 2013 at 13:21
@HABO You are correct. I missed that out. Updated the Question. — Anuya
– Anuya, Commented Jun 18, 2013 at 13:23
Yes, if you have this string: abc / / cdf / / , what should it yeild? I'm guessing abc / cdf, is that correct? — Katie Kilian
– Katie Kilian, Commented Jun 18, 2013 at 13:23
Regex. Remove any leading slashes ignoring whitespace, remove any trailing slashes ignoring whitespace, collapse any other occurrences (ignoring whitespace) to a single slash. — HABO
– HABO, Commented Jun 18, 2013 at 13:26

Antonio · Accepted Answer · 2014-05-05 09:12:50Z

6

Try this:

Dim s As String '= ...
Dim aux() As String

aux = s.Split(New Char() {"/"c}, StringSplitOptions.RemoveEmptyEntries)
s = String.Join("/", aux)

You may want to handle the white spaces:

aux = s.Split("/ ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)
s = String.Join(" / ", aux)

edited May 5, 2014 at 9:12

answered Jun 18, 2013 at 13:23

Antonio

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1 Comment

Katie Kilian Over a year ago

Wouldn't this result in a string with extra white space in it? Might need to .Trim() the strings in the array before you can join them.

Joel Coehoorn · Accepted Answer · 2013-06-18 13:22:07Z

2

Function RemoveTrailingSlash(ByVal s as String) As String
    'Note that space is included in this array
    Dim slash() As Char = "/ ".ToCharArray()
    s = s.TrimEnd()
    While s.EndsWith("/")
        s = s.TrimEnd(slash)
    End While
    Return s
End Function

Typed directly into the reply window (not tested!), but I think it will work.

answered Jun 18, 2013 at 13:22

Joel Coehoorn

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1 Comment

Katie Kilian Over a year ago

This functioned for the original examples 1 - 4, but not for the newly added example 5.

Piotr Stapp · Accepted Answer · 2013-06-18 13:26:57Z

1

You could use Rexexp expression. Bellow should work:

 "(/\s+)+$"

it search for:

'/'
followed by one or more white-chars: \s+
multiple times - expression: (/\s+)+
in the end of string ($)

answered Jun 18, 2013 at 13:26

Piotr Stapp

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